1. 'Relations of the British Government with the Tribes of the Aden Hinterland' Date: 1906/1906 Language: English Geographic region: Aden Protectorate
2. Aden Delimitation: The History of the Question and the Present Situation as Regards the Territories of the Amir of Dthali Date: 1902/1902 Language: English Geographic region: Aden Protectorate
